--- a/man/internals/internals.texi	Mon Nov 11 15:39:07 2002 +0000
+++ b/man/internals/internals.texi	Mon Nov 11 15:56:21 2002 +0000
@@ -3816,6 +3816,14 @@
 which can speed things up; but it can still cause noticeable performance
 degradation.)
 
+On Linux systems using @samp{glibc 2}, these strategies are built in to
+the so-called ``Doug Lea malloc.''  See, for example, Doug Lea's home
+page, especially @uref{http://gee.cs.oswego.edu/dl/html/malloc.html,``A
+Memory Allocator''}.  The source file, @file{malloc.c} (available at the
+same place) is copiously (and usefully!) commented.
+@uref{http://www.malloc.de/,Wolfram Gloger's home page} may also be
+useful.
+
 @file{free-hook.c} contains some debugging functions for checking for invalid
 arguments to @code{free()}.
 
@@ -3829,7 +3837,6 @@
 similar in spirit to the @file{sys*.h} files described in section J, below.
 
 
-
 @example
 blocktype.c
 blocktype.h